<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title> 音波 </title>
    <style>
        body {
  background: #34495e;
  padding: 1em;
  background: #2B3134;
  color: #777;
  text-align: center;
  font-family: "Gill sans", sans-serif;
  width: 80%;
  margin: 0 auto;
}

.loader {
  position: absolute;
  top: 50%;
  left: 48%;
}

.line {
  animation: expand 1s ease-in-out infinite;
  border-radius: 10px;
  display: inline-block;
  transform-origin: center center;
  margin: 0 3px;
  width: 1px;
  height: 25px;
}

.line:nth-child(1) {
  background: #27ae60;
}

.line:nth-child(2) {
  animation-delay: 180ms;
  background: #f1c40f;
}

.line:nth-child(3) {
  animation-delay: 360ms;
  background: #e67e22;
}

.line:nth-child(4) {
  animation-delay: 540ms;
  background: #2980b9;
}

@keyframes expand {
  0% {
    transform: scale(1);
  }
  25% {
    transform: scale(2);
  }
}
/* svg path,
svg rect{
  fill: #FF6700;
}
h1{
  margin: 1em 0;
  border-bottom: 1px dashed;
  padding-bottom: 1em;
  font-weight: lighter;
}
p{
  font-style: italic;
}
.loader{
  margin: 0 0 2em;
  height: 100px;
  width: 20%;
  text-align: center;
  padding: 1em;
  margin: 0 auto 1em;
  display: inline-block;
  vertical-align: top;
} */
    </style>
</head>
<body>
    <div class="loader">
        <div class="line"></div>
        <div class="line"></div>
        <div class="line"></div>
        <div class="line"></div>
      </div>
      
      <!-- <div class="loader loader--style6" title="5">
        <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
           width="24px" height="30px" viewBox="0 0 24 30" style="enable-background:new 0 0 50 50;" xml:space="preserve">
          <rect x="0" y="13" width="4" height="5" fill="#333">
            <animate attributeName="height" attributeType="XML"
              values="5;21;5" 
              begin="0s" dur="0.6s" repeatCount="indefinite" />
            <animate attributeName="y" attributeType="XML"
              values="13; 5; 13"
              begin="0s" dur="0.6s" repeatCount="indefinite" />
          </rect>
          <rect x="10" y="13" width="4" height="5" fill="#333">
            <animate attributeName="height" attributeType="XML"
              values="5;21;5" 
              begin="0.15s" dur="0.6s" repeatCount="indefinite" />
            <animate attributeName="y" attributeType="XML"
              values="13; 5; 13"
              begin="0.15s" dur="0.6s" repeatCount="indefinite" />
          </rect>
          <rect x="20" y="13" width="4" height="5" fill="#333">
            <animate attributeName="height" attributeType="XML"
              values="5;21;5" 
              begin="0.3s" dur="0.6s" repeatCount="indefinite" />
            <animate attributeName="y" attributeType="XML"
              values="13; 5; 13"
              begin="0.3s" dur="0.6s" repeatCount="indefinite" />
          </rect>
        </svg>
      </div> -->

</body>
</html>
<script>


</script>